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STUSB1602 数据表(PDF) 24 Page - STMicroelectronics |
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STUSB1602 数据表(HTML) 24 Page - STMicroelectronics |
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24 / 39 page ![]() I²C register address I²C register field name I²C register reset value/description Customization type 2Eh VDD_UVLO_DISABLE 1b: disables UVLO threshold detection on VDD pin SW 1. Italic text indicates this parameter is customized by NVM re-programming. Table 16. Conditions for VBUS power path assertion in source power role Pin Electrical value Operation conditions Comment Type-C attached state VDD pin monitoring VBUS_SENSEpin monitoring VBUS_EN_SRC 0 Attached.SRC or UnorientedDebug Accessory.SRC or OrientedDebug Accessory.SRC VDD < OVLO if VDD pin is supplied VBUS within valid voltage range The signal is asserted only if all the valid operation conditions are met HiZ Anyother state VDD > OVLO if VDD pin is supplied VBUS is out ofvalid voltage range The signal is de-asserted when at least one non valid operation condition is met. Table 17. Source power role with accessory support Connection state CC1 pin CC2 pin Type-C device state CC_OPERATION_STATUS register @11h A_B_SIDE pin VCONN supply VBUS_EN_SRC pin CC_CONNECTION_STATUS register @0Eh Nothing attached Open Open Unattached.SRC HiZ OFF HiZ 00h Sink attached Rd Open Attached.SRC HiZ OFF 0 2Dh Open Rd 0 OFF 0 2Dh Powered cable withoutsink attached Open Ra Unattached.SRC HiZ OFF HiZ 00h Ra Open HiZ OFF HiZ 00h Powered cable with sink attached or VCONN- powered accessory attached Rd Ra Attached.SRC HiZ CC2 0 2Fh Ra Rd 0 CC1 0 2Fh Debug accessory mode attached source role Rp Rp Unattached.SRC HiZ OFF HiZ 00h Debug accessory mode attached sink role Rd Rd UnorientedDebug Accessory.SRC HiZ OFF 0 6Dh Debug accessory mode attached sink role Rd ≤Ra OrientedDebug Accessory.SRC HiZ OFF 0 6Dh ≤ Ra Rd 0 OFF 0 6Dh Audio adapter accessory mode attached Ra Ra AudioAccessory HiZ OFF HiZ 81h STUSB1602 USB Type-C typical applications DS11254 - Rev 5 page 24/39 |
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